Following are a number of back-translations as well as a sample translation for translators of Zephaniah 1:16:

• Kupsabiny: “On that day, horns will be blown and battle cries will be shouted. Even/also the protected cities will be fought against.” (Source: Kupsabiny Back Translation)
• Newari: “a day of trumpet and battle cry
  against the fortified cities
  and against the corner towers.” (Source: Newari Back Translation)
• Burmese (translation by A. Judson): “against fortified cities (and) high towers,
  a day of trumpet blast and shouting.” (Source: John Hans de Jong in The Bible Translator 2017, p. 64ff. )
• Hiligaynon: “and it-will-be-heard the sounding of the trumpets/horns and the screaming/shouting of the soldiers while they are-attacking the stone-wall towns and its high towers.” (Source: Hiligaynon Back Translation)